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Abstract:

An X-ray device includes a rotating unit that rotates an X-ray emitter
and an opposing X-ray receiver about a patient's head. X-rays are emitted
by the X-ray emitter and received by the X-ray receiver via the patient's
head. An upper shelf supports the rotating unit. A head stabilizing
member stabilizes the patient's head. The stabilizing member extends from
a location adjacent to the rotating unit and above the X-ray emitter and
X-ray receiver to a location wherein the patient's head is stabilized.

Claims:

1. An X-ray device comprising: a rotating unit rotating an X-ray emitter
and an opposing X-ray receiver about a patient's head, wherein X-rays are
emitted by the X-ray emitter and received by the X-ray receiver via the
patient's head; an upper shelf supporting the rotating unit; and a head
stabilizing member stabilizing the patient's head, the head stabilizing
member extending from a location adjacent to the rotating unit and above
the X-ray emitter and X-ray receiver to a location where the patient's
head is stabilized.

2. An X-ray device according to claim 1, the head stabilizing member
extending from the upper shelf.

3. An X-ray device according to claim 1, comprising a substantially
vertical column supporting the upper shelf, the head stabilizing member
extending from the substantially vertical column to the location where
the patient's head is stabilized.

4. An X-ray device according to claim 1, the head stabilizing member
extending from the substantially vertical column to a location above the
X-rays emitted by the X-ray emitter.

5. An X-ray device according to claim 1, the head stabilizing member
preventing the rotating unit from rotating 360 degrees.

6. An X-ray device according to claim 3, the head stabilizing member
extending from the substantially vertical column to a location between
the X-ray emitter and the opposing X-ray receiver.

7. An X-ray device according to claim 3, the head stabilizing member
extending from the substantially vertical column below the rotating unit
and above the X-rays emitted by the X-ray emitter.

8. An X-ray device according to claim 3, the upper shelf extending
substantially perpendicularly horizontally from the substantially
vertical column.

9. An X-ray device according to claim 1, the head stabilizing member
comprising an elongated member having a pad at one end for receiving a
forehead of the patient's head.

10. An X-ray device according to claim 9, comprising a sensor on the pad
for sensing a characteristic of the patent's head.

11. An X-ray device according to claim 10, the elongated member housing
communication cables for connecting the sensor to control circuitry.

12. An X-ray device according to claim 1, the rotating unit comprising an
upper housing containing drive gears for enacting said rotating, an
emitter housing carrying X-ray emitter, and a receiver housing carrying
the X-ray receiver; wherein the head stabilizing member extends above the
emitter housing and receiver housing but below the upper housing.

13. An X-ray device according to claim 12, wherein the upper housing is
directly connected to the emitter housing.

14. An X-ray device according to claim 13, comprising a support bar
connecting the upper housing to the receiver housing.

15. An X-ray device according to claim 14, the support bar depending from
the upper housing and the head stabilizing member extending between the
support bar and the upper housing.

16. An X-ray device according to claim 15, wherein the support bar is
circular and has opposing ends that depend from the upper housing.

17. An X-ray device according to claim 13, comprising a support housing
connecting the emitter housing and the receiver housing.

18. An X-ray device according to claim 15, the support housing comprising
an opening, and the head stabilizing member extending between the upper
housing and the support housing and through the opening in the support
housing.

19. An X-ray device according to claim 1, the head stabilizing member
comprising a first portion that extends substantially perpendicularly to
the substantially vertical column and a second portion that extends
substantially parallel to the substantially vertical column.

20. An X-ray device according to claim 19, comprising a pad for resting a
patient's forehead, the pad being attached to the second portion.

21. An X-ray device according to claim 19, the first portion extending
from the substantially vertical column and the second portion extending
from a location above the X-rays emitted by the X-ray emitter to the
location where the patient's head is stabilized.

22. An X-ray device according to claim 1, comprising a chin stabilizing
member stabilizing the patient's chin, wherein the head stabilizing
member and chin stabilizing member are attached.

23. An X-ray device according to claim 22, wherein the chin stabilizing
member and head stabilizing member are movable together in a height
direction towards and away from the upper shelf to accommodate patients'
heads of different sizes.

24. An X-ray device according to claim 22, wherein at least one of the
chin stabilizing member and head stabilizing member are movable towards
and away from the upper shelf and towards and away from the other of the
chin stabilizing member and head stabilizing member to accommodate
patients' heads of different sizes.

Description:

FIELD

[0001] The present disclosure relates to X-ray devices having a head
stabilizing member, including but not limited to X-ray devices for
extra-oral dental X-ray imaging.

BACKGROUND

[0002] Conventional extra-oral dental X-ray imaging devices typically
include a mechanism that supports the patient's head in a stable position
during imaging. In some examples, the mechanism includes a head support
member hung from an upper shelf of the device. In these examples, the
head support member is fed through a bearing assembly of a rotating unit
on the device, thus requiring the main bearings to be relatively large so
as to allow for bearing movement around the support member. Also, the
rotating unit is an electronic component and therefore electrical cabling
must be specially configured around the head supporting member. The
present inventor has recognized that this type of arrangement is complex
and expensive.

[0003] In other examples, the mechanism includes a head support member
mounted on a lower shelf of the device. In these examples, the head
support member does not interfere with the bearing and cabling mechanics;
however, the support member must be relatively thin so as not to
interfere with the X-ray process. The present inventor has recognized
that this type of arrangement does not provide enough stable head
support.

SUMMARY

[0004] The present disclosure provides X-ray devices. The devices include
a rotating unit rotating an X-ray emitter and an opposing X-ray receiver
about a patient's head, wherein X-rays are emitted by the X-ray emitter
and received by the X-ray receiver via the patient's head. An upper shelf
supports the rotating unit and a substantially vertical column supports
the upper shelf. A head stabilizing member stabilizes the patient's head.
The head stabilizing member extends from a location adjacent to the
rotating unit and above the X-ray emitter and X-ray receiver to a
location wherein the patient's head is stabilized.

BRIEF DESCRIPTION OF THE DRAWINGS

[0005] FIG. 1 is a perspective view of one embodiment of an X-ray device.

[0006]FIG. 2 is another perspective view of the X-ray device shown in
FIG. 1.

[0014] FIG. 10 is a view of Section 10-10 taken in FIG. 6 showing rotation
of a rotating unit.

[0015]FIG. 11 is a side view of another embodiment of an X-ray device.

[0016] FIG. 12 is a side view of another embodiment of an X-ray device.

DETAILED DESCRIPTION OF THE DRAWINGS

[0017] In the following description, certain terms have been used for
brevity, clearness and understanding. No unnecessary limitations are to
be implied therefrom beyond the requirement of the prior art because such
terms are used for descriptive purposes only and are intended to be
broadly construed. The different devices described herein may be used
alone or in combination with other devices. It is to be expected that
various equivalents, alternatives and modifications are possible within
the scope of the appended claims. Each limitation in the appended claims
is intended to invoke interpretation under 35 U.S.C. §112, sixth
paragraph only if the terms "means for" are explicitly recited in the
respective limitation.

[0018] FIGS. 1-5 depict one example of an X-ray device 10 configured as an
extra-oral dental X-ray device. The device 10 includes a rotating unit 12
for rotating (as shown by arrow R in FIGS. 4 and 5) an X-ray emitter 14
and an opposing X-ray receiver 16 about a patient's head P. X-rays 18
(FIG. 3) are emitted by the X-ray emitter 14 and received by the X-ray
receiver 16 via the patient's head P (FIGS. 4 and 5) to produce one or
more X-ray images. The device 10 includes an upper shelf 20 supporting
the rotating unit 12, and also a substantially vertical column 22
supporting the upper shelf 20. As shown in FIG. 3, the substantially
vertical column 22 extends in a vertical direction V. The upper shelf 20
extends in a horizontal direction H that is generally perpendicular to
the vertical direction V. In this manner, the substantially vertical
column 22 and upper shelf 20 form an L-shape, wherein the upper shelf 20
extends from the vertical column 22 at a substantially right angle. The
rotating unit 12 depends from and is located below the upper shelf 20 in
the vertical direction V. The structure of the rotating unit, X-ray
emitter, X-ray receiver, upper shelf, and support column can vary from
that depicted in the drawings. For example, the vertical column 22 is not
a necessary component. In other embodiments, the upper shelf 20 extends
from a wall or other support structure rather than a column.

[0019] In the example of FIGS. 1-5, the rotating unit 12 includes an upper
housing 24 containing drive gears (not shown) for enacting such rotation.
The rotating unit 12 further includes an emitter housing 26 carrying the
X-ray emitter 14 and a receiver housing 28 carrying the opposing X-ray
receiver 16. A support bar 30 is generally circular in shape and has
opposing ends 32, 34 that are attached to and depending from the upper
housing 24. The support bar 30 is located below the upper housing 24 and
below the upper shelf 20 in the vertical direction V. The receiver
housing 28 is attached to the circular support bar by a bracket 29. The
structure of the upper housing, emitter housing, receiver housing and
support bar can vary from that depicted in the drawings. Other
non-limiting examples are shown in FIGS. 6-10, 11 and 12, discussed
hereinbelow.

[0020] The device 10 further includes a head stabilizing member 25 for
stabilizing the patient's head P. The head stabilizing member 25 extends
from a location adjacent to the rotating unit 12 and above the X-ray
emitter 14 and X-ray receiver 16 in the vertical direction V to a
location where the patient's head P is stabilized by the head stabilizing
member 25. In the example shown in FIGS. 1-5, the head stabilizing member
25 includes an elongate member 36 having a first portion 38 and a second
portion 40. In the example of FIGS. 1-5, the first portion 38 extends in
the horizontal direction H from the substantially vertical column 22 to a
location above the X-ray emitter 14 and X-ray receiver 16 in the vertical
direction V and between the X-ray emitter 14 and X-ray receiver 16 in the
horizontal direction H. The second portion 40 extends in the vertical
direction V from the location above the X-ray emitter 14 and X-ray
receiver 16 to a location where the patient's head P is stabilized. As
shown in FIG. 3, the location where the patient's head P is stabilized is
between the X-ray emitter 14 and X-ray receiver in the horizontal
direction H and level with the X-ray emitter 14 and X-ray receiver 16 in
the vertical direction V. Thus the head stabilizing member 25 extends
from the substantially vertical column 22 below the rotating unit 12 and
above the X-rays emitted by the X-ray emitter 14. The head stabilizing
member does not have to be attached to the vertical column 22. For
example, with reference to FIG. 11, the first portion 38 is connected to
and extends from the upper shelf 20 in the vertical direction instead of
the column 22 in the horizontal direction H. In another example that is
not depicted, the head stabilizing member 25 extends from a wall
supporting the upper shelf 20 and the vertical column is omitted. The
structure and configuration of the head stabilizing member can also vary
from that shown.

[0021] In the example shown in FIGS. 1-5, the head stabilizing member 25
also includes a pad 42 located at the outer end of the second portion 40
of the elongate member 36. A sensor (not shown) can be co-located with
the pad 42 for sensing a characteristic of the patients head P. In this
example, the elongate member 36 serves as a conduit for communication
cables (not shown) for connecting the sensor to related control circuitry
(not shown).

[0022] As shown in FIGS. 4 and 5, the head stabilizing member 25 extends
from a location adjacent to the rotating unit 12. In this example, the
head stabilizing member 25 prevents full 360 degree rotation of the
rotating unit 12 shown by arrow R. The limits of rotation of the rotating
unit 12 occur where the opposing ends 32, 34 of the support bar 30
approach and engage with the head stabilizing member 25.

[0023] FIGS. 6-10 depict another example of an X-ray device 110 configured
as an extra-oral dental X-ray device. Similar to the device 10, the
device 110 includes a rotating unit 112 for rotating (as shown by arrow R
in FIGS. 9 and 10) an X-ray emitter 114 and an opposing X-ray receiver
116 about a patient's head P. X-rays 118 are emitted by the X-ray emitter
114 and received by the X-ray receiver 116 via the patient's head P to
produce one or more X-ray images. The device 110 includes an upper shelf
120 supporting the rotating unit 112, and also a substantially vertical
column 122 supporting the upper shelf 120. As shown in FIG. 8, the
substantially vertical column 122 extends in a vertical direction V. The
upper shelf 120 extends in a horizontal direction H that is generally
perpendicular to the vertical direction V. In this manner, the
substantially vertical column 122 and upper shelf 120 form an L-shape,
wherein the upper shelf 120 extends from the vertical column 122 at a
substantially right angle. The rotating unit 112 depends from and is
located below the upper shelf 120 in the vertical direction V. The
structure of the rotating unit, X-ray emitter, X-ray receiver, upper
shelf, and support column can vary from that depicted in the drawings. As
stated above, the vertical column 122 is not critical and is omitted in
other embodiments.

[0024] In the example of FIGS. 6-10, the rotating unit 112 includes an
upper housing 124 containing drive gears (not shown) for enacting such
rotation. The rotating unit 112 further includes an emitter housing 126
carrying the X-ray emitter 114 and a receiver housing 128 carrying the
opposing X-ray receiver 116. The upper housing 124 is directly connected
to the emitter housing 126 by a transitional housing 152 and a support
housing 148. The support housing 148 defines a central opening 150. As
explained above, the structure of the upper housing, emitter housing, and
receiver housing can vary from that depicted in the drawings.

[0025] The device 110 further includes a head stabilizing member 125 for
stabilizing the patient's head P (FIGS. 9 and 10). The head stabilizing
member 125 extends from a location adjacent to the rotating unit 112 and
above the X-ray emitter 114 and X-ray receiver 116 to a location where
the patient's head P is stabilized by the head stabilizing member 125. In
the example shown, the head stabilizing member 125 includes an elongate
member 136 having a first portion 138 and a second portion 140. The first
portion 138 extends in the horizontal direction H from the substantially
vertical column 122 to a location above the X-ray emitter 114 and X-ray
receiver 116 in the vertical direction V and between the X-ray emitter
114 and X-ray receiver 116 in the horizontal direction H. The second
portion 140 extends in the vertical direction V from the location above
the X-ray emitter 114 and X-ray receiver 116 to a location where the
patient's head P is stabilized. Specifically, the head stabilizing member
125 extends from a location above the opening 150, through the opening
150 and to the location where the patient's head P is stabilized. In the
example shown the location where the patient's head P is stabilized is
between the X-ray emitter 114 and X-ray receiver in the horizontal
direction H and level with the X-ray emitter 114 and X-ray receiver 116
in the vertical direction V. Thus the head stabilizing member 125 extends
from the substantially vertical column 122 adjacent to the rotating unit,
below the upper housing and above the X-rays 118 emitted by the X-ray
emitter 114. In other examples, the first portion 138 can be connected to
and extend from the upper shelf 120 in the vertical direction instead of
the column 122 in the horizontal direction, for example as shown in FIG.
11. Also, the vertical column 122 can be omitted and the stabilizing
member 125 can extend from e.g. a well or from the upper shelf 120. As
explained above, the structure of the head stabilizing member can vary
from that shown.

[0026] In the example shown, the head stabilizing member 125 also includes
a pad 142 located at the outer end of the second portion 140 of the
elongate member 136. A sensor (not shown) can be co-located with the pad
142 for sensing a characteristic of the patients head P. In this example,
the elongate member 136 serves as a conduit for communication cables (not
shown) for connecting the sensor to related control circuitry (not
shown).

[0027] As shown in FIGS. 9 and 10, the head stabilizing member 125 extends
from a location adjacent to the rotating unit 112. In this example, the
head stabilizing member 125 prevents full 360 degree rotation of the
rotating unit 112 shown by arrow R. The limits of rotation of the
rotating unit 112 occur where the transitional housing 152 of the
rotating unit 112 approaches and engages with the head stabilizing member
125.

[0028] In the example of FIG. 12, the device 310 includes a head
stabilizing member 325 for stabilizing the patient's head P. The head
stabilizing member 325 extends from a location adjacent to the rotating
unit 312 and above the X-ray emitter 314 and X-ray receiver 316 to a
location where the patient's head P is stabilized by the head stabilizing
member 325. The head stabilizing member 325 is connected to a chin
stabilizing member 360. In the example shown, the head stabilizing member
325 and chin stabilizing member 360 are attached to or formed integral
with a connection bar 362 that extends along the substantially vertical
column 322 in the vertical direction V. In the example shown, the
connection bar 362 extends within the vertical column 322; however, the
connection bar 362 could be mounted to the outside of the column 322.
Further, the column 322 can be omitted (as described previously) and the
connection bar 362 can be mounted to a wall. In the example shown in FIG.
12, the chin stabilizing member 360 is movable in the vertical direction
V as shown by arrow A. The head stabilizing member is also movable as
shown by arrow A. The head stabilizing member 325 and chin stabilizing
member 360 are connected together and therefore can be moved
simultaneously and in unison in the direction of arrow A. Conversely, the
chin stabilizing member 360 and head stabilizing member 325 could be
movable individually and separate from each other. Individual and/or
collective movement of the respective members 360, 325 can be afforded by
numerous mechanical connections such as slots, tracks or other
functionally equivalent mechanical connections. Alternately, movement of
the chin stabilizing member 360 and head stabilizing member 325 can be
controlled by a drive mechanism and automated controller, as such
mechanical and/or automated drive means are known in the art.